Ebtjchshaw bybamji daboo walla



E. B. DAROOWALLA.

PADLOCK.

APPLICATION FILED JAN. 4, 1916.

Patented Aug. 15, 1916.

ERUCI-ISHAW BYRAMJI DAROOWALLA, or BOMBAY, INDIA. v

PADLOCK.

Application filed January 4, 1916.

T0 (ZZZ whom it may concern:

Be it known that I, ERUcHsHAw BYRAMJI DAROOWALLA, a subject of the Emperor of India, residing at Bombay, India, have invented certain new and useful Improvements in Padlocks, of which the following is a specification.

This invention relates to improvements in padlocks.

It comprises a key with two bits on the same side of the stem operating two separate bolts one of which looks the other. The shackle is split, each half opening from the opposite side of the case, while the padlock is divided into two compartments by a partition, a bolt working in each. The key moves clockwise in opening it and engages the bolts in difierent portions of a revolution, thus insuring extra security, but as the two movements commence at right angles to each other one of them has to be reversed in order to give the bolts their proper direction.

Referring to the annexed sheet of drawings, Figure 1 shows the padlock with the cover and partition removed. Fig. 2 is a similar view with the partition in place. Fig. 8 is a cross section through the center of the padlock. Fig. at shows the key with two bits in line and so spaced as to enter their respective compartments in the padlock, and Fig. 5 is an elevation of one of the tumblers.

The shackle c is split as shown in Fig. 3 each half being hinged at one side of the case and entering a recess in a boss at the other side. The two halves are locked in this position by the mechanism within.

In Fig. 1 the bolt f is pivoted at g and enters a recess 9", the other endof g is pivoted at h to the key bar .9 working in guides- 73, j, and is, Z. It is operated by the key working clockwise in the hole a. bolt 15 is seen in Fig. 2 lying against the partition Z) (Fig. 3) and between the guides to and '0. Fig. 1 shows the bolt f lying against the bottom of the case, upon the fulcrum g and is hinged to the key bar .9 which works between the guides z, j, and 70, Z. The end of the key enters the hole 12. and its course is shown by the circular dotted line around it. Two projections g on the key bar passing through from the bolt t (Figs. 2 and 3) Specification of Letters Patent.

The second .9 engage with a single projection w the partition I). The bolt t lies Patented Aug. 15, 1916.

Serial No. 70,202.

upon the partition Z2 and occupies the outer compartment below the cover 29 and engages at the point 9 with the right hand boss (Z and it moves within guides o and w. For clearnessthe tumblers are not shown in these figures, but are shown separately in Fig. 5.

The locking of the two bolts takes place as follows :The projection m on the under side of the bolt t passes through the partition and enters between two projections y (Fig. 1) upon the ke bar 3. The drawing shows the bolts locke and to open them the key would first move the bolt t downward releasing the bolt from the boss (Z and carrying the projection m below from the projections g on the key bar 8 thus freeing it. The key continues its movement pushing the key bar to the left along with the lower end of the lever bolt f causing the end 7'' to be released from the boss (Z. The shackle may then be opened.

The lock is furnished with the usual tumblers which for the sake of clcarness are represented in Fig. 5; they are pivoted upon the pin m in Fig. l and on the pin to in Fig. 2.

What I claim as my invention and desire to secure by Letters Patent is 1. In a padlock, the combination of a shackle divided longitudinally into two sections, and rotatable bosses on opposite sides of the padlock to which each of the shackle sections respectively are permanently connected at one end and with which the other end of each shackle section respectively ongages when in the closed position.

2. In a padlock, the combination of a shackle divided longitudinally into two sections, rotatable bosses on opposite sides of the padlock to which each of the shackle sections respectively are permanently connected at one end and with which the other end of each shackle section respectively engages when in the closed position, a bolt located within the padlock and pivoted intermediate its ends and adapted to engage one of said bosses with one end, and a key bar connected to the other end of the bolt for the purpose described.

3. In a padlock, the combination of a shackle divided longitudinally into two sections, rotatable bosses on opposite sides of the padlock to which each of the shackle sections respectively are permanently connected at one end and With which theother end of out of engagement by a key for the purpose 11' each shackle section respectively engages described. When in the closed position, a bolt located In testimony whereof I have signed my Within the padlock and pivoted intermename to this specification in the presence of diate its ends and adapted to engage one tWo subscribing Witnesses.

of said bosses with one end, a key bar con- ERUCHSHAW BYRAMJI DAROOWALLA. nected to the other end of the bolt, and a Witnesses:

second bolt adapted to engage the other of J. M. RUTNAGUE,

said bosses and to be moved longitudinally CARL F. DEIGHMAN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents.

' Washington, D. G. 

